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Airline Transport Pilot > Meteorology- Weather Reports and Charts > Flashcards

Meteorology- Weather Reports and Charts Flashcards

You may prefer our related Brainscape-certified flashcards:
Charter Pilot (Part 135) - Oral flashcards
1
Q

METAR

A

Aviation Routine Weather Report

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2
Q

Is the wind in a METAR given in true or magnetic?

A

TRUE

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3
Q

What are the two categories included in a METAR under significant weather?

A

Precipitation
Sky obscuration

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4
Q

What are three things that may cause a SPECI to be issued

A

Thunderstorms
Windshift of more than 45 degrees
Weather changing from VFR to MVFR or to IFR

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5
Q

What does VV mean in the following: VV005

A

The vertical visibility is 500 feet

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6
Q

What three things can a manual observer add to an AWOS?

A

Thunderstorm
Precipitation
Obscurations to visibility

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7
Q

ASOS

A

Automated Surface Observing System

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8
Q

AWOS

A

Automated Weather Observing System

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9
Q

When does the AUTO appear in a METAR?

A

It means that the report is either a AWOS or ASOS

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10
Q

How can you tell if a weather report is an ASOS or AWOS?

A

It will show AO1 or AO2 in the remarks

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11
Q

METER: CHINO

A

Ceiling Height Indicator Not Operating

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12
Q

METAR: FC

A

Funnel Cloud

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13
Q

METAR: M 1/4SM, what is the visibility?

A

“less than” 1/4SM

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14
Q

METAR: SLP993 6////

A

Sea Level Pressure: 999.3 hPA
6////: Indeterminable amount of precipitation over the last 3 hours.

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15
Q

PIREP: FV000

A

Flight Visibility is 0SM

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16
Q

TAF: P6SM

A

Greater than 6 Statue Miles

17
Q

TAF: VC

A

It means Vicinity. This is 5-10 miles radius from the airport.

18
Q

TAF: PROB30 and PROB40

A

30 to 39% chance that thunderstorms will occur
40 to 49% chance that thunderstorms will occur

19
Q

TAF: Read the valid time in the following
031745Z 031818

A

Issued 3rd day of the month at 1745Z
Valid 3rd day of the month at 1800Z to the following day at 1800Z

20
Q

TAF: PROB40 0103

A

There is a 40-49% probability between 0100Z and 0300Z

21
Q

Winds and Temperatures Aloft: Are winds given in True or Magnetic?

A

True

22
Q

Winds and Temperatures Aloft: The temperatures above what altitude are always negative?

A

24,000 feet

23
Q

Winds and Temperatures Aloft: @26,000 it shows the following: 263821. What does this mean?

A

At 260 degrees TRUE, the wind velocity is 38 knots and the temperature is -21C.

24
Q

What is the standard atmosphere and the lapse rate?

A

15C and 29.92
2C/1,000
1”/1,000

25
Q

Winds and Temperatures Aloft: What is the significance of the following 9900+00

A

The wind is light and variable and the temperature is 0C

26
Q

Winds and Temperatures Aloft: What is the significance of the following: 763821

A

Subtract 50 from 76, this gives you 26. This means that the wind is coming from 260 TRUE. Add 100 to 38, this means that the wind speed is 138 knots. The temperature is a -21C.

27
Q

Winds and Temperatures Aloft: What if the winds are 200 knots or greater?

A

The chart simply codes the winds as if they were 199 knots.

28
Q

What is an isobar?

A

Line of equal pressure reduced to see level

29
Q

Surface Analysis Chart: How can you tell if the weather is VFR, MVFR, IFR

A

VFR- No line
MVFR- Line around it
IFR- Line around it with shading

30
Q

The high level significant prog chart is used for what altitudes?

A

FL250 to FL600

31
Q

Is the weather depiction chart actual or forecast?

A

Actual

32
Q

Is a prognostic chart actual or forecast?

A

Forecast

33
Q

What does a convective sigmet talk about?

A

Embedded thunderstorms
Lines of thunderstorms
Thunderstorms with 3/4 inch hale and tornadoes

34
Q

The outlook shown covers what time after the Sigmet?

A

2 to 6 hours

35
Q

What are the four ways that ATC will describe precipitation?

A

Light, moderate, heavy, extreme

36
Q

Sigmets are issued when conditions effect an area of at least how much?

A

At least 3,000 square miles.

37
Q

What do the following MB values equate to in ft:
500 MB
300 MB
200 MB

A

18,000 ft
30,000 ft
39,000 ft

Airline Transport Pilot (17 decks)

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